Annual % of total population
1960 21.2142866237172
1961 21.4909329820871
1962 21.7289558921001
1963 21.9288496188925
1964 22.1234911379489
1965 22.3228742790954
1966 22.4787283061743
1967 22.5500991627416
1968 22.5249335032406
1969 22.4059134619648
1970 22.2194718013096
1971 21.9551101630111
1972 21.5564631825924
1973 21.1792569003339
1974 20.8692979535384
1975 20.53912372249
1976 20.1949203262815
1977 19.8473761850466
1978 19.5439098897995
1979 19.1838967079232
1980 18.775859746358
1981 18.4423811914737
1982 18.1321571420744
1983 17.7949625178381
1984 17.4819802640662
1985 17.2166039960051
1986 17.0127930032322
1987 16.9273992548441
1988 16.9972043102894
1989 17.1756656736057
1990 17.3857393712797
1991 17.5990590025582
1992 17.8217493027105
1993 18.0627556261383
1994 18.2857078898179
1995 18.4577888824698
1996 18.5779819289136
1997 18.6953513467006
1998 18.8186938040269
1999 18.927747505814
2000 18.9629684042348
2001 18.9321460987491
2002 18.8838617441763
2003 18.7905656677778
2004 18.6765285716002
2005 18.5376441699051
2006 18.3944445796866
2007 18.2452067597686
2008 18.0533342338
2009 17.8481043168069
2010 17.6671048051598
2011 17.3709875995261
2012 17.0781468361778
2013 16.9229126136718
2014 16.7532116039452
2015 16.5662552741227
2016 16.3563617787576
2017 16.1887192731633
2018 16.0999189028693
2019 16.0251333525815
2020 15.9809771422725
2021 15.9137585031619
2022 15.7999008645782
2023 15.6897677419847